John Kavanagh is the head coach at SBG Ireland, the first MMA fighter the country ever had and also the first BJJ black belt. Also, he happens to be current UFC Featherweight Champion Conor McGregor's coach.

Kavanagh has just released his (great) autobiography Win or Learn, but through a glitch it's not available for digital download until June 30th. 

Anyhow, as you'll see from the below thread a young, bed-ridden fan couldn't make it out to buy the book and Kavanagh did something very cool.